Question

Name any two colloidal sols of metals which are prepared by electrical disintegration.

Answer 1

Answer:

Electrical Disintegration/ Bredig's arc Method: This is applied to obtain colloidal sols of metals like gold, silver and platinum. An electric arc is stuck between the electrodes of the metal immersed in the dispersion medium.

Answer 2

Answer:

Colloidal sols of metals such as gold, silver, platinum, etc, can be prepared by this method.

Explanation:

• In this method, electric arc is struck between electrodes of the metal immersed in the dispersion medium.
• They intenses to form particles of colloidal size.
• The electrical disintegration process, also known as the Bredig's arc method, is a way to create colloidal solutions of metals like gold, silver, or platinum.
• This approach combines condensation and dispersion.
• The alkali utilized in Bredig's arc technique is potassium hydroxide. Therefore, the alkali's role in Bredig's arc technique is to stabilize the sols.

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